Open-air heating device.



P. H. TROUTMAN.

OPEN AIR HEATING DEVICE.

APPLICATION Hum APR. 11, 1910.

Patented Nov. 21,1911.

following to be a full, clear, and exact de-- renown. alumna rnou'rmnmor canon'cnx, COLORADO.

omen-am nnnrme DEVICE.

Specification of Letters Patent. Patented Nov. 21, 1911. Application filed 1 m ii, 1910. Serial in. 554,898. 7

To all whom it may concern:

Be it known that I, PERGIVAL HAMMER TnoU'rMAN, citizen of the United States, residin at Canon City, county of Fremont, and tate of Colorado, have invented certain new. and useful Improvements in Open- Air Heating Devices; and I do declare the scription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

M invention relates to improvements in heating devices'adapted for open air use for the protection of orchards, gardens, etc., from the action of the frost during the periods when the latter will produce injury, as by killing the blossoms upon fruit trees and shrubbery.

My object is to provide a' device adapted to hold a suflicientf quantity of liquid fuel to last for a number of hours, constitutin' the periods during the night when frost is l1able to produce damage of the above-named character, in horticultural localities.

M further objectisto rovide a device whic shall be of simple an economical construction, reliable, durable and efficient in use, and to these ends the invention consists of the features hereinafter described and claimed, all of which will be fully under- "stood by reference to the accompanyir g drawings in which is illustrated an embodiment thereof.

In this drawing Figure 1 is a side elevation of my im roved heater. Fig. 2 is a vertical, longitudinal section taken through the same. Flg. 3 is a section taken on the line 3-3, Fig. 1.

, The samereference characters indicate the same parts in allthe views.

Let the numeral 5 designate a heater considered in its entirety, and comprising'a base 6, a casing. 7 a bottom 8 provided with a central openlng 9; and a centrally located, ulpwardly pro ecting chimney 10 located in't e receptacle, its lower extremity being inserted in the bottom openingof the device. As shown in the drawings, the elements 6, 7 and 8 are suitably connected, as shown .at 12. It is evident, however, that any other suitable construction may be employed. For in- The base 6 projects considerably below .the bottom 8, and is provided with an opening 13 for the entrance of air for draft purney 10 is frustum-shaped, being largest, at the base and tapering upwardly. ThlS particular shape is preferable, since it increases tremities and provided near its top with orichimney at points nearer the fuel 15 than the extreme top of the chimney.

When my, improved device is in use, as many of them are employed as may be necesbe s'uflicientto raise the temperature in the vicinity of the said area or tract, to the desired degree. Each of the devices should be supplied with a sufficient quantity of fuel to last during the period of the night when frost is imminent, or when the temperature reach a point sulficiently low to produce in- ]ury -tion, or utilize to the best advantage, the heat units of the fuel. The device, however, may be converted into a smudge pot'when it is desired to produce smoke over a certain area. This is accomplished by retardin combustion by reducing the area of the dra the area of the-openin' 9 in the bottom of cated a slidable cut-off or damper 18, which engages ways 19, with which the base 6 of the device is provided, these ways being 10- in 13. Y T-Iaving thus described my invention,what

I claim is: I i

1. A heating device comprising a receptacle adapted to contain liquid fuel and having an o ning in its bottom, a frustumshaped chimney extendingupwardly through the receptacle from the bottom openin thereof and forming a closed interior wa the chimney being open at both extremities and largest at its lower end, the opening in the bottom of the receptacle being approximately the same size as the cross-sectional area of the lowermost end of the chimney,

stance, the upper part 7 and the base 6 may,

a base extending below the bottom of the poses. Asshpwn in the drawing, the chim-.

the draft. This chimney is open at "both ex- I fices 14 to all w the air to escape from the sary, to properly heat the desired area; and v to this end they are'distributed at such intervals as experiment may determine will without the aid of artificial means would' the chimney. Inthe rawing I have indi- UNITED STATES PATENT OFFICE.

I if desired, consist of an integral structure.

The chimney serves to promote combusopening 13 to any desired degree less than at Y cated both above and below the draft. openrece tack and formin a closed chamber beper controlling the said draft opening for reducing the area of the-draft openin to any desired degree less than the area 0 the opening in the lower end of the chimney to convert the device into a smudge pot.

2; A heating device, comprising a fuelcontaining receptacle having an opening in its bottom, a frustum-shaped chimney extending upwardly through the receptacle from thebottom opening thereof and forming a closed interior wall for-the receptacle, the outer wall of the receptacle also being frustum-shaped and smallest at its lower end, a base extending below the bottom of reaching the top the receptacle and forming a closed chamberbeneath the receptacle in communication withithe chimney, the base being provided with an opening having an area at least equal to the cross-sectional'area of the opening in the chimney at its lower extremity, the uper extremity of the chimney above the fuel avin perforations to allow the air to escape into the combustion chamber before of the chimney, the said perforations being of less area than the cross-sectional area of the chimney at its lower extremity, and means for regulating the area of the draft opening to any desired degree less than the area ofthe opening in the lower end of the'chimney to con vert the device into a smudge pot, substantially as described.

In testimony whereof I afiix my signature in presence-of two witnesses.

PERCIVAL HAMMER TROUTMAN. Witnesses:

ELIZABETH BOWEN, A. EBERT OBRIEN. 

